chouclud

following someone through an access-controlled door without showing your own credentials

like at an office building where doors require that you swipe your badge to open them

I've worked at several big tech firms and only at this last one is there a sign above the reader that says "no tailgating". It is surprisingly effective. Nowhere else I've worked does everyone badge in as a matter of habit. We'll hold the door open for each other but we wait to hear the telltale beep and click of the lock for everyone.

We can probably add to it: put your badge away when you go out for lunch. Lunch spots near concentrations of office buildings are saturated with coworkers discussing proprietary information.